What AI assistants are
AI assistants help people complete writing, research, analysis, coding, and other knowledge-work tasks.
Software category
AI Assistants
Software designed to assist users with tasks using artificial intelligence.
Understand how this category supports everyday knowledge work before evaluating individual products.
Category overview
A practical starting point for evaluation
Common AI use cases
Common uses include drafting, summarizing, research support, analysis, coding, and everyday productivity.
Who may evaluate AI tools
Individual contributors, team leads, and teams doing knowledge work may evaluate these tools.
What to look for
Compare capabilities, availability, pricing, business fit, integrations, and relevant privacy or security information.
Explore software
Explore AI Assistants software
4 software options
AI Assistants
ChatGPT is an AI assistant with verified capabilities for writing and content, research and web search, document and file analysis,…
Best for
Solo users and knowledge workers who want conversational support for drafting, explaining,…
Main trade-off
Responses can be incorrect or misleading, including when they sound confident, so important facts, calculations,…
View detailsPrice
Individual pricing: $20 USD per month for ChatGPT Plus.
AI Assistants
Claude is a strong fit for knowledge work, writing, research and coding-heavy workflows, especially for users who value projects, long-form…
Best for
Knowledge workers
Main trade-off
Usage limits apply.
View detailsPrice
Pro: $20/month or $200/year (about $17/month equivalent).
AI Assistants
Google Gemini is strongest for users already working inside Google’s ecosystem and those who value multimodal and productivity integration.
Best for
Google ecosystem users
Main trade-off
Plans, features and limits vary by market.
View detailsPrice
Market-specific plan availability and pricing should be checked where Google supports it; no arbitrary…
AI Assistants
Perplexity is a strong fit for research-heavy users who frequently need current web information and source discovery.
Best for
Researchers
Main trade-off
Search orientation is not the same as a full productivity suite.
View detailsPrice
Pro is $17 USD/month equivalent when billed annually.
Decision guides
Compare AI Assistants by user fit
ChatGPT vs ClaudeChatGPT suits broad mixed workflows; Claude is especially compelling for long-form work, projects, structured reasoning and coding-heavy users.ChatGPT vs Google GeminiChatGPT offers a broad standalone assistant workflow; Gemini is strongest when Google ecosystem and productivity integration are central.ChatGPT vs PerplexityChatGPT is broader for mixed assistant tasks; Perplexity is more research/search-first and source-oriented for current web information.Claude vs Google GeminiClaude emphasizes long-form knowledge work and coding workflows; Gemini emphasizes Google ecosystem integration and multimodal productivity.Claude vs PerplexityClaude is the broader knowledge-work and coding choice; Perplexity is differentiated by research/search and source discovery.Google Gemini vs PerplexityGemini is stronger for Google-connected multimodal productivity; Perplexity is stronger for search-first research and source discovery.
A clearer way to compare
SaaSvan compares buyer fit, pricing structure, and trade-offs. Product details and pricing can change, so verify time-sensitive information before purchase.
Read our methodology